Jamno

Jamno is a lake in northern Poland, close to the Baltic Sea. It is divided from the sea by a spit, on which lie the resorts of Mielno and Unieście.

Jamno covers an area of over 22 square kilometres; its maximum length is 10.1 kilometres and its maximum breadth is 3.4 kilometres. Its greatest depth is 3.9 metres. The lake is popularly used for sailing.

An examination of this lake from 2007 shows it is a brackish coastal lagoon that at that time was heavily polluted by sewage from the nearby city of Koszalin.